<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>
        系统管理
      </el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="7">
          <!-- 搜索与添加区域 -->
          <!-- clearable 表单可以快速清除  @clear 监听被清空的事件处理函数 -->
          <el-input placeholder="请输入用户id名"
                    v-model="queryInfo.id"
                    clearable
                    @clear="getUserList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList"
                stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="username"
                         label="姓名"></el-table-column>
        <el-table-column prop="email"
                         label="邮箱"></el-table-column>
        <el-table-column prop="mobile"
                         label="电话"></el-table-column>
        <el-table-column prop="role_name"
                         label="角色"></el-table-column>
        <el-table-column prop="mg_state"
                         label="状态">
          <!-- 作用域插槽会覆盖上面的prop -->
          <template slot-scope="scope">
            <!-- {{scope.row}} -->
            <el-switch v-model="scope.row.mg_state"
                       @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="180px">
          <template slot-scope="scope">
            <!-- {{scope.row}} -->
            <!-- 修改按钮 -->
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="primary"
                       icon="el-icon-delete"
                       size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark"
                        content="分配角色"
                        placement="top"
                        :enterable="false">
              <el-button type="primary"
                         icon="el-icon-setting"
                         size="mini"
                         @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[2, 10, 20, 50]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total"></el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClose">
      <!-- 内容主体区域 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="100px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户信息"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="addDialogClosed">
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"
                    disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色"
               :visible.sync="setRoleDialogVisable"
               width="50%"
               @close="setRoleDialogClosed">
      <div>
        <p>当前用户:{{userInfo.username}}</p>
        <p>当前角色:{{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId"
                     placeholder="请选择">
            <el-option v-for="item in rolesList"
                       :key="item.id"
                       :label="item.roleName"
                       :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRoleDialogVisable = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1(3|4|5|6|7|8|9)\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('手机号不合法,请输入正确的手机号'))
    }
    return {
      // 获取用户列表参数对象
      queryInfo: {
        // 搜索关键字
        id: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页多少条数据
        pagesize: 2
      },
      // 用户信息表
      userList: [],
      // 总共的数据条数
      total: 0,
      // 控制添加用户的Dialog对话框
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名长度应该在 3 到 10 个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: ',密码长度应该在 6 到 15 个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          {
            type: 'email',
            message: '请输入正确的邮箱地址',
            trigger: ['blur', 'change']
          }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editDialogVisible: false,
      // 查询到的用户信息
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          {
            type: 'email',
            message: '请输入正确的邮箱地址',
            trigger: ['blur', 'change']
          }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisable: false,
      userInfo: '',
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的分配角色id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 发起请求  获取用户信息并存到 userList
    async getUserList() {
      // 解构赋值  data重命名为res
      const { data: res } = await this.$http.get('/admin/getlist', {
        params: this.queryInfo.id
      })
      if (res.meta.status != 200) return this.$message.error('获取用户列表失败')
      this.userList = res.data.users
      this.total = res.data.total

      // console.log(this.userList)
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch 开关状态的改变
    async userStateChanged(userInfo) {
      console.log(userInfo)
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status === 200) {
        this.$Message.success('更新用户状态成功')
      } else {
        userInfo.mg_state = !userInfo.mg_state
        return this.$Message.error('更新用户状态失败')
      }
    },
    // 监听添加用户窗口的关闭事件  窗口关闭 清空表单
    addDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 表单提交之前的预校验
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起用户的请求
        const { data: res } = await this.$http.post('user', this.addForm)
        if (res.meta.status !== 201) {
          this.$Message.error('添加用户失败')
        } else {
          this.$Message.success('添加用户成功')
          // 隐藏添加用户对话框
          this.addDialogVisible = false
          // 重新刷新用户列表
          this.getUserList
        }
      })
    },
    // 展示要编辑的用户 的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$Message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的修改事件
    addDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户 信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('user/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$Message.error('更新用户信息失败')
        } else {
          // 关闭对话框
          this.editDialogVisible = false
          // 刷新列表
          this.getUserList()
          // 提示修改成功
          this.$Message.success('修改数据成功')
        }
      })
    },
    // 根据id删除对应用户的信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // 如果用户确认删除,则返回值为字符串 confirm
      // 如果用户取消了删除,则返回值为字符串 cancel
      // console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$Message.info('已经取消删除')
      } else {
        const { data: res } = await this.$http.delete('user/' + id)
        if (res.meta.status != 200) {
          return this.$Message.error('删除用户失败')
        } else {
          this.$Message.success('删除用户成功')
          this.getUserList()
        }
      }
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前获取所有的角色列表
      const { data: res } = await this.$http.get('role')
      if (res.meta.status !== 200) {
        return this.$Message.error('获取角色信息失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisable = true
    },
    // 点击按钮,分配角色  点击之后保存新的id值
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$Message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(
        `user/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )
      if (res.meta.status !== 200) {
        return this.$Message.error('更新角色失败')
      }
      this.$Message.success('更新用户角色成功')
      this.getUserList()
      this.setRoleDialogVisable = false
    },
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>
<style lang="less" scoped>
</style>